Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Drive control device and method for electromagnetic heating equipment and its power switch tube

A technology of power switch tube and heating equipment, applied in induction heating control, induction heating and other directions, can solve the problems of increasing electromagnetic heating noise, increasing pulse current of power switch tube, reducing drive pulse width of power switch tube, etc. Resonant voltage, avoid heating noise, enhance the effect of experience

Active Publication Date: 2021-04-20
FOSHAN SHUNDE MIDEA ELECTRICAL HEATING APPLIANCES MFG CO LTD
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the problem in the related technology is that the pulse current of the power switch tube suddenly increases in this interval due to the reduction of the drive pulse width of the power switch tube, which increases the electromagnetic heating noise.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Drive control device and method for electromagnetic heating equipment and its power switch tube
  • Drive control device and method for electromagnetic heating equipment and its power switch tube
  • Drive control device and method for electromagnetic heating equipment and its power switch tube

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0039] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0040] The solution of reducing the resonance voltage by reducing the driving pulse width in the related art will be briefly introduced below.

[0041] like figure 2 As shown, in the mains peak interval T', the driving pulse width of the power switch tube is reduced, for example, the driving pulse width is switched from the first threshold T1' to the second threshold T2, and the second threshold T2' is smaller than the first threshold T1', Therefore, the resonant voltage at the peak of the mains power is reduced, and the maximu...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an electromagnetic heating device and a drive control device and method for a power switch tube thereof. The drive control device of the power switch tube in the electromagnetic heating device and the control module acquire the heating power of the electromagnetic heating device and are used in the heating of the electromagnetic heating device. When the power is greater than the preset power threshold, it is judged whether the AC power provided to the electromagnetic heating device is in the peak range, and if the AC power provided to the electromagnetic heating device is in the peak range, the control drive module first outputs the first drive signal to the power switch tube in the turn-on phase To make the power switch tube work in an amplified state, and then output a second driving signal to the power switch tube to make the power switch tube work in a saturated conduction state. Therefore, the driving signal in the form of step voltage can be used in the peak interval of the alternating current, and the pulse current of the power switch tube can be suppressed while reducing the resonance voltage, avoiding the heating noise caused by the increase of the pulse current of the power switch tube, and improving the user experience.

Description

technical field [0001] The invention relates to the technical field of household appliances, in particular to a drive control device for a power switch tube in an electromagnetic heating device, an electromagnetic heating device, and a drive control method for a power switch tube in an electromagnetic heating device. Background technique [0002] In the related art, when the electromagnetic heating equipment is running, the power switch tube is driven with the driving signal of the same driving pulse width, such as figure 1 As shown, at the peak of the mains voltage, the resonant voltage is the highest, which may exceed the withstand voltage of the power switch tube, which is generally 1200V. Therefore, in the related art, in order to ensure the reliable operation of the power switch tube, when the electromagnetic heating equipment is heated at the highest power, such as figure 2 As shown, the resonant voltage is usually reduced by reducing the driving pulse width in the p...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H05B6/06
CPCH05B6/06
Inventor 江德勇王云峰邹伟
Owner FOSHAN SHUNDE MIDEA ELECTRICAL HEATING APPLIANCES MFG CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com